Since 1952
America's Oldest Speed Shop ®
Speedway Motors Bill Smith

KB Chevy 383 Hypereutectic Pistons, Flat Top, 6.0 Rod

SAME DAY SHIPPING!

Specs
Sold in Quantity:
Set
Piston Diameter:
-
Stroke:
3.75
Wrist Pin Diameter:
.9272
Piston Ring Style:
C
Connecting Rod Length:
6.000"
Piston Weight:
425
Wrist Pin Weight:
145
Piston Style:
Flat Top w/ 2 valve reliefs
Piston Material:
Hypereutectic Aluminum
Garage Sale:
No

Share by Email

From
To

Click image to enlarge

X

Details

Reviews

Q & A

What's in the Box

Keith Black Hypereutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

  • 390 Hypereutectic alloy
  • Fully machined crowns and valve reliefs
  • Drilled oil drain backs
  • Full floating wrist pins
  • Triple wound spiral locks
  • Reflective alloy allows 2% power increase
  • Quench dome technology minimizes deterioration
  • Zero deck quench designs
  • Lightweight wrist pins

For S/B Chevy 383 c.i. (4.000" bore x 3.75" stroke).

Ring Style Chart (GIF)

474-122 Instructions (PDF)

Specs

  • Comp Height 5.7" Rod -  1.433
  • Comp Height 6.0" Rod -  1.13
  • Pin Diameter -  0.9272

Item Details

C/R 58cc=11.9, 64cc=10.9, 76cc=9.6
Piston/Pin Weight: 570 g
Rod Length: 6.0", Ring Style: C

You may also be interested in:

KB Chevy 383 Hypereutectic Pistons, .100 Dome, 5.7 Rod
                        

Keith Black Hypereutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

  • 390 Hypereutectic alloy
  • Fully machined crowns and valve reliefs
  • Drilled oil drain backs
  • Full floating wrist pins
  • Triple wound spiral locks
  • Reflective alloy allows 2% power increase
  • Quench dome technology minimizes deterioration
  • Zero deck quench designs
  • Lightweight wrist pins

For S/B Chevy 383 c.i. (4.000" bore x 3.75" stroke).

Ring Style Chart (GIF)

474-111 Instructions (PDF)

KB Chevy 383 Hypereutectic Pistons, .150 Dome, 6.0 Rod
                        

Keith Black Hypereutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

  • 390 Hypereutectic alloy
  • Fully machined crowns and valve reliefs
  • Drilled oil drain backs
  • Full floating wrist pins
  • Triple wound spiral locks
  • Reflective alloy allows 2% power increase
  • Quench dome technology minimizes deterioration
  • Zero deck quench designs
  • Lightweight wrist pins

For S/B Chevy 383 c.i. (4.000" bore x 3.75" stroke).

Ring Style Chart (GIF)

474-123 Instructions (PDF)

KB Chevy 383 Hypereutectic Pistons, Flat Top, 5.7 Rod
                        

Keith Black Hypereutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

For S/B Chevy 383 c.i. (4.000" bore x 3.75" stroke).

  • 390 Hypereutectic alloy
  • Fully machined crowns and valve reliefs
  • Drilled oil drain backs
  • Full floating wrist pins
  • Triple wound spiral locks
  • Reflective alloy allows 2% power increase
  • Quench dome technology minimizes deterioration
  • Zero deck quench designs
  • Lightweight wrist pins

Ring Style Chart (GIF)

474-134 Instructions (PDF)

Icon Chevy 383 Forged Pistons, Flat Top, 6.0 Rod
                        

Formerly KB Forged Pistons. Starting with 2618 alloy heat treated to high strength T-6 specifications, these give you the best value for your money. Exclusive V-rib adds strength without adding weight but allows maximum cooling. 

  • High ductility 2618 alloy
  • Dual forced pin oiling on most applications
  • Lateral gas porting on higher compression ratios
  • Fully machined with deep valve pockets
  • Second land accumulator grooves
  • Top land mini groove technology
  • Diamond finished skirts
  • Triple wound spiral locks
  • Comp Height 5.7" Rod -  1.433
  • Comp Height 6.0" Rod -  1.13

For Chevy 383 c.i. (4.000" bore x 3.75" stroke). Use Style C rings (1/16", 1/16", 3/16").

Ring Style Chart (GIF)

Forged Pistons Installation Instructions (PDF)

KB Chevy 383 Hypereutectic Pistons, Dish, 6.0 Inch Rod
                        

Keith Black Hypereutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

For S/B Chevy 383 c.i. (4.000" bore x 3.75" stroke).

  • 390 Hypereutectic alloy
  • Fully machined crowns and valve reliefs
  • Drilled oil drain backs
  • Full floating wrist pins
  • Triple wound spiral locks
  • Reflective alloy allows 2% power increase
  • Quench dome technology minimizes deterioration
  • Zero deck quench designs
  • Lightweight wrist pins

Ring Style Chart (GIF)

474-164 Instructions (PDF)

Speedway Gas Proven Series Piston Rings, 4.00 Bore, Styles A, C, D
                        Speedway Gas Proven piston rings are the best value in piston rings! These tough rings will withstand 12.5 maximum compression, 7000 maximum sustained RPM, and up to 450 HP. First and second rings are cast iron yielding 55,000 psi strength with end gap factory set at .012" to .018". Three piece oil ring features chrome rails over a stainless steel expander, which gives uniform wall pressure and efficient oil control.  

Designed for gasoline use. Not recommended for use with alcohol.

Ring Style Chart (GIF)